<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>第三方平台</title>

</head>
<style>
    * {
        margin: 0;
        padding: 0;
    }

    .header {
        width: 100%;
        height: 50px;
        background-color: gainsboro;
        margin: 0 auto;
    }

    .content {
        width: 100%;
        height: 500px;
        background-color: salmon;
        margin: 0 auto;
    }
    .left{
        width: 200px;
        height: 100%;
        background-color: forestgreen;
        float: left;
    }
    .right{
        width: 200px;
        height: 100%;
        background-color: forestgreen;
        float: left;
    }
</style>


<body>
<div class="header" >
    <h1 align="center">模拟第三方平台测试</h1>
</div>
<div class="content">
    <div class="left"></div>
    <div class="right"></div>
</div>
</body>
</html>